1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _PERF_DWARF_REGS_H_
3 #define _PERF_DWARF_REGS_H_
4
5 #define DWARF_REG_PC 0xd3af9c /* random number */
6 #define DWARF_REG_FB 0xd3affb /* random number */
7
8 #ifdef HAVE_DWARF_SUPPORT
9 const char *get_arch_regstr(unsigned int n);
10 /*
11 * get_dwarf_regstr - Returns ftrace register string from DWARF regnum
12 * n: DWARF register number
13 * machine: ELF machine signature (EM_*)
14 */
15 const char *get_dwarf_regstr(unsigned int n, unsigned int machine);
16
17 int get_arch_regnum(const char *name);
18 /*
19 * get_dwarf_regnum - Returns DWARF regnum from register name
20 * name: architecture register name
21 * machine: ELF machine signature (EM_*)
22 */
23 int get_dwarf_regnum(const char *name, unsigned int machine);
24
25 #else /* HAVE_DWARF_SUPPORT */
26
27 static inline int get_dwarf_regnum(const char *name __maybe_unused,
28 unsigned int machine __maybe_unused)
29 {
30 return -1;
31 }
32 #endif
33
34 #ifdef HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET
35 /*
36 * Arch should support fetching the offset of a register in pt_regs
37 * by its name. See kernel's regs_query_register_offset in
38 * arch/xxx/kernel/ptrace.c.
39 */
40 int regs_query_register_offset(const char *name);
41 #endif
42 #endif
43
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.